This product has not been tested for use in creating collagen nanofibers. The literature suggests that a Bornstein and Traub Type I Collagen would be suitable. As the product is a dilute solution at acidic pH, a powdered material may be a preferred option. The end user would have to determine suitability. Please see the link below to a publication that successfully used product C9791 in the creation of collagen nanofibers:
https://www.sciencedirect.com/science/article/pii/S0378517317307780
Please see the link below to review this product, which is the starting material for C8919:
https://www.sigmaaldrich.com/product/sigma/c9791